Combined electrical heater and blower



Dec. s, 1925. 1,564,890

' `s. T. RINKER ET AL COMBINED ELECTRICAL HEATER AND BLOWER Fld May 3. 1923 2 Sheets-Sheet 1 Dec. 8(l 1925- 1,564,896 s. T. RINKER ET Al.

COMBINED ELECTRICAL HEATER AND BLOWER Filed My 3, 1923 2 Sheets-Sheet 2 RUST 5.1'. RINKER lPatented Dec. 8, 1925.

UNITED STA TES PATENT `OFFICE.-

S. TRUMAN RINKER AND ERVIN J'. RUST, 0F CLEVELAND, C1110.

COMBINED ELECTRICAL HEATER AND BLOWER.

Application filed May 3,

To all whom it may concern:

Be it known that we, S. TRUMAN RINKER and ERVIN J. RUST, citizens of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in a Combined Electrical Heater and Blower, of which the following is a speci- The present invention relates to an improvement in electric hair dryers, the general object of the improvement being to vprovide a compact electric device adapted to be held in the hand, and comprising an electric heater, a fan or blower and a small electric motor, the said parts being particularly arranged and constructed to permit the operator to conveniently control and mani ulate the device and to eii'ect discharge o either hot or cold air therefrom.

In the accompanying drawings, Fig. 1 is an end view of the top of thedevice, the

discharge spout or extension and the heater therein being shown in section. Fig. 2 is a vertical section of the handle and motor and also the fan casing and discharge spout.

' Fig. 3 is a transverse section of the spout on line 3--3 of Fig. 1, and Fig. 4 is a similar view on line 4-4 of Fig. 2. Fig. 5 is a perspective view of the removable cover plate' or the fan-casing. Fi

ctive view of the screene cap for the schartge spout. 7 is a perspective view o the combine fan and motor body or casing. Fig. 8 is a side elevation of the vides a su plemental handle extension.

' of theelectric heating element.

brush holder extension for the ymotorbody. Fig. 9 is a side elevation of the base member for the electric connector and which ro- 1g. 10 is a si e' elevation of the separable member of the electrical connector. Fig'. 11 is.

a cro section ofthe brush holder on line 11--11 of Fig. 2, and Fig. 12 is an endl view of the base part pf the electrical connector on line 12--12 of Fig. 2. Fig. :13 is an end `view on line 131-13 of Fig. 2, with the base part removed. Fig. 14 is a perspective view of the notched plates which form 'the body 6 is aper-J 1923. serial No. 636,353.

and walls 3 laterally on straight lines for a substantial distance, but this outlet and' passage is preferably oli center in respectto the fan chamber and the motor body and handle 2. A flanged cover plate 6 having the same outline as chamber 4 and passage 5 is removably secured to the upper edges-1y of walls 3 byscrews 7, and a substantially square tapering nose cap Sis frictionally and detachably engaged with the lateral discharge extension formed by walls and said cover lplate 6. A fine wire-mesh screen 9 is fixed within or across the mouth of the nose-cap, and cover plate 6 is provided with radial air intake openings 10 centrally above the round fan chamber 4, which intake open-v ings may be opened or closed by a rotatable disk 11 having registering air openings 12, andthe disk is Jfurther provided with portions 14 of its edges curled upwardlyv to permit finger engagement to rotate the disk. A fan having straight upright blades l5 extending radially in respect to a hub 16 is adapted to be rotated vat a high speed in chamber 4 by means ofa relatively small electric motor/M mounted within the depending cylindrical. body 2 which forms a casing for the motor and also a handle to support the device in the hand. Thus, body 2 is hollow to receive the field winding and laminations 17 and the armature or rotor 18, and tie rods 19 are used to secure the laminations in place. The tie rods also extend outwardly beyond the lower open end of body 2 to permitthe attachment of a brush-supporting member 2O and also the base member 21 of a separable electrical attachment-plug or connector thereto, these added parts also serving to extend and lengthen'the body to 4iorm a relatively long handle adapted to be grasped conveniently in the hand. Member 20 has a bearing tube 22 centrally within its closed end for oneend of the armature shaft 23, and an'anti-` friction ball 24 and adjusting screw 25 supports the shaftin an upright position and takes up its end thrust. The opposite endof armature shaft 23 extends through a separate bushing or tubular bearing 26 in the perforated upper end of body 2, the perforations 27 providing circulating openings for air passmg upwardly thr 2 when-drawn in by the fan throng omg ings 28 in the side of member 20. member has recesses within its bottom ,hee to receive the nuts 29 which engage tie mds.

ouglrbody 19 to fasten the member rigidly to the bottom end of body 2, and the electric conductors 30 for the brushes 31 pass outwardly through suitable openings in the diaphragm or cross wall of this member where they may be projected through other openings in the base member and connected to the terminal Iscrews 32 and 33, for the attachment blades vis also electrically connected tocable 36 by a flexible connection 37 and a smaller separable attachment plug 38 or its equivalent thereby permitting the device to be readily detached as a Whole from the cable and handled independently anda-lso permitting the heater to be electrically disconnected without disconnecting themotor. Separable plug 38 is in eect an electric switch and a switch may be substituted therefrom if desired. Heater E comprises a body formed of insulating and heat-resisting material, for example asbestos board, and as shown two plates 30 are slotted medially for a part of their lengthvto permit them to be dove-tailed and fastened together at right angles. A solid body of insulating and heat resisting material may be used instead.

Each longitudinal edge of each plate is notched at uniformly-spaced intervals and the respective notches in the opposite edges and staggered in respect to each other when the two plates are dove-tailed together so that a helical resistance wire 41 may be wound spirally around the notched angular body with the convolutions spaced the same distance apart as the notches in the edges .of the respective plates and with the wire coil also retired in respect to the longitudinal edges ofthe plates. Thus when the angular body carrying the resistance coil is introduced into passage 5 the edges of \the' lates bear against the four Hat walls on the iorizontall and vertical median lines thereof and the resistance coil is spaced apart from these metal wallsand appears as a circle viewed from either end, see Figs. 3 and 4. The transverse horizontal plate is provided at its inner end with a pair of inding screws 42and 43, respectively for the yopposite ends of the .resistance coil V41, and these screws are also usedtosupport angularshaped terminal members 44 and 45, respectively, having round pointed extremi-v extending through a block 46 of insulating material secured by screws within the fiat bottom of passage 5. These terminals project sufficiently beneath the block to permit a detachable slip-joint connection to be made with the electric-current supply connecting member 38. The round terminals pass through vertical bores in block 46, and when cover plate 6 is removed the heater f may be elevated bodily out of passage 5 without disconnecting the resistance wires. When the terminals are seated in the bores the heater is locked against longitudinal movement, that is, it can not be shifted toward the fan nor removed from the mouth of the discharge passage. In operating the device, the fan and heater may be operated concurrently to effect a discharge of heated air when both are electrically connected or the heater may be electrically disconnected and the fan operated to discharge only cold air. The heater may also be connected and operated without operating the fan, and the volume and force of the air to be delivered may be regulated and cut down by adjusting the regulating disk 11. Heating of the air is promoted by dividin the discharge passage into four longitu inal sub-divisions and locating a lsection of the resistance coil of helical wire in 4each small sub-division, and 'the slots in the plates for holding the resistance coil are of e ual depth to produce a coil having eonvolutlons of uniform vdiameter but the slots may vary in depth to produce a resistance coil of varying diameter in the path of the outlow- 100 ing air in each sub-division. `The contour or shape of the fan and its chamber and the spout may be varied from that shown withtion. 10i

What I claim, is: 1. A combined heater and blower, comprising a casing having therein a fan a cylindrical handle for said casing embod ing an electric motor, air passages throu h said handle and communicating with t e fan chamber, and an attachment extension at the lower end of the handle for a detachable electrical coupling 2. A combined heater and blower, comprising a casing having at one end a fan andl at the other a discharge passage, a hollow handle having open communication with the fan end of the casing and provided with airintake openings at its lower end, an 'electric 120 heater within the discharge end of said cas- Y Vlastname /municating with said casing, a rotatahle fan and an electric heater within said casing,

and an electric motor within said vhandle indriving connection with saidkfan.

4c. A combined heater and `ijlovv'er, com- Y prising a. easin havi'ng at one end a. fan and at the other a lscharge passage, a handle secured to the casing at the fan end and having 'therein an electric motor, air pas-- sages through the handle and communlcatL 10 ing ivith the casing, and an electric heater withm the discharge end of the casing.

In testimony whereof We have .signed our 

